# NexusAgent Planning - Final Documentation

**Status:** READY TO BUILD  
**Date:** 2025-10-29  
**Architecture:** Approved & Simplified

---

## 📋 Active Planning Documents

### 1. **CORRECTED-ARCHITECTURE.md**
**The fundamental constraint and solution:**
- ✅ Agents MUST stay in tool-specific folders (`.opencode/agent/`)
- ✅ Context CAN be shared (`.nexusagent/context/`)
- ✅ Governance CAN be shared (`.nexusagent/governance/`)
- ✅ Reference pattern: `@../.nexusagent/context/file.md`

**Read this first** - explains why the architecture is structured this way.

---

### 2. **ARCHITECTURE-REVIEW.md**
**Comprehensive validation against guide documents:**
- ✅ Validates alignment with BUILDING-CONTEXT-AWARE-SYSTEMS.md
- ✅ Validates alignment with DATA-GOVERNANCE-AGENT-SYSTEM.md
- ✅ Multi-tool adaptability analysis
- ✅ Simplification recommendations
- ✅ Build approach recommendations

**Read this second** - confirms the approach is sound and provides guidance.

---

### 3. **BUILD-PLAN.md**
**Simple status document:**
- Current status: READY TO BUILD
- Final architecture diagram
- What we're building
- Build order

**Read this last** - quick reference for current status.

---

## 🎯 The Final Architecture

```
project/
├── .nexusagent/                 # SHAREABLE (tool-agnostic)
│   ├── context/                # Domain knowledge (any tool reads)
│   │   ├── core/
│   │   ├── domain/
│   │   ├── processes/
│   │   └── standards/
│   │
│   └── governance/             # Data governance (any tool reads)
│       ├── metadata-index.json
│       ├── workflow-state.json
│       └── tmp/
│
└── .opencode/                   # TOOL-SPECIFIC (OpenCode)
    ├── agent/                  # OpenCode agents (MUST be here)
    │   ├── main-orchestrator.md
    │   ├── context-provider.md
    │   └── subagents/
    │       ├── quality-validator.md
    │       └── lifecycle-manager.md
    │
    └── command/                # OpenCode commands (MUST be here)
        └── validate-context.md
```

### How Agents Reference Shared Context

```xml
<!-- .opencode/agent/main-orchestrator.md -->

**Load shared context:**
@../.nexusagent/context/core/essential-patterns.md
@../.nexusagent/context/standards/quality-criteria.md

**Read governance data:**
Read: ../.nexusagent/governance/metadata-index.json
```

---

## 🚀 What We're Building

### Repository Structure

```
nexus/
├── install.sh              # Simple installer
├── profiles/
│   └── default/           # Full system (not "basic")
│       ├── nexusagent/
│       │   ├── context/
│       │   └── governance/
│       └── opencode/
│           ├── agent/
│           └── command/
└── README.md
```

### Installation Creates

```bash
~/nexus/install.sh

# Creates in project:
.nexusagent/               # Shared resources
├── context/              # From profile
└── governance/           # From profile

.opencode/                 # OpenCode integration
├── agent/                # From profile
└── command/              # From profile
```

---

## 📖 Foundation Guides

Located in parent directory (`.Building/`):

1. **BUILDING-CONTEXT-AWARE-SYSTEMS.md** (2000+ lines)
   - Directory structure patterns
   - XML prompt engineering
   - 3-level context system
   - Orchestrator design
   - Subagent patterns
   - Workflow templates

2. **DATA-GOVERNANCE-AGENT-SYSTEM.md** (2000+ lines)
   - Dual metadata system (JSON + XML)
   - Explicit context passing (request files)
   - Context Management Agent
   - Governance subagents (4 types)
   - Workflow state machine
   - Quality validation (6 dimensions)

3. **UNIFIED-ARCHITECTURE.md**
   - How both systems work together

**These are THE SOURCE OF TRUTH** - follow them exactly.

---

## ✅ Key Decisions

### 1. Start Simple
- ✅ ONE profile (default) with FULL functionality
- ❌ NOT three profiles (basic/governance/content)
- ✅ Let context grow organically with use

### 2. Follow Guides Exactly
- ✅ XML prompt structure (Context → Role → Task → Instructions → Output)
- ✅ 3-level context system (Isolated → Filtered → Full)
- ✅ Dual metadata (JSON primary, XML secondary)
- ✅ Request ID protocol (explicit context passing)
- ✅ 6 quality dimensions

### 3. Adaptive by Design
- ✅ Context in `.nexusagent/` (any tool can read)
- ✅ Agents in `.opencode/` (tool-specific)
- ✅ Document how to add Claude/Cursor support
- ✅ Progressive enhancement (OpenCode first, others optional)

### 4. Production Ready
- ✅ Works out of the box
- ✅ Handles real projects
- ✅ Maintains quality automatically
- ✅ Grows with user's needs
- ✅ Thoroughly documented

---

## 📦 Archived Documents

Moved to `archive/` folder:
- `00-MASTER-PLAN.md` - Early planning, superseded
- `01-TECHNICAL-SPECIFICATION.md` - Details now in guides
- `02-MULTI-TOOL-INTEGRATION.md` - Covered in ARCHITECTURE-REVIEW
- `03-SIMPLIFIED-ARCHITECTURE.md` - Superseded by CORRECTED-ARCHITECTURE
- `FINAL-ARCHITECTURE-DECISION.md` - Merged into current docs
- `PROJECT-STRUCTURE.md` - Will be generated from actual build

These are kept for historical reference but are no longer active.

---

## 🎬 Next Steps

1. ✅ Planning complete
2. ✅ Architecture validated
3. ✅ Guides aligned
4. ✅ Simplified to single profile
5. ➡️ **Ready to build**

**Start with:** Create repository structure in `nexus/`

---

## 📊 Build Phases

### Phase 1: Repository Structure (Day 1)
- Create `nexus/` directory
- Create `install.sh`
- Create `profiles/default/` structure

### Phase 2: Shared Context Layer (Days 2-3)
- Build `profiles/default/nexusagent/context/`
- Core patterns, standards, templates
- Tool-agnostic markdown files

### Phase 3: Shared Governance Layer (Day 4)
- Build `profiles/default/nexusagent/governance/`
- JSON templates (metadata-index, workflow-state)
- Tmp structure

### Phase 4: OpenCode Agents (Days 5-10)
- Build `profiles/default/opencode/agent/`
- Main orchestrator (3-level context)
- Context provider
- Governance subagents

### Phase 5: OpenCode Commands (Day 11)
- Build `profiles/default/opencode/command/`
- Validation command
- Workflow commands

### Phase 6: Test & Document (Days 12-14)
- Test installation
- Test all agents
- Write comprehensive README
- Create examples

---

## 🎯 Success Criteria

**Installation:**
- [ ] One command installs full system
- [ ] Creates correct directory structure
- [ ] Files are in correct locations

**Functionality:**
- [ ] Main orchestrator works
- [ ] 3-level context allocation works
- [ ] Quality validation works
- [ ] Lifecycle management works
- [ ] Request ID protocol works

**Documentation:**
- [ ] Clear installation guide
- [ ] Agent usage examples
- [ ] Adaptation guide (for other tools)
- [ ] Troubleshooting guide

**Quality:**
- [ ] Follows guide patterns exactly
- [ ] No deviations from proven architecture
- [ ] Production-ready code
- [ ] Comprehensive error handling

---

## 💡 Key Insights

### What Makes This Work

1. **Separation of Concerns**
   - Intelligence (`.nexusagent/`) = tool-agnostic
   - Execution (`.opencode/`) = tool-specific
   - Clean boundary

2. **Progressive Enhancement**
   - Works perfectly with OpenCode (primary)
   - Other tools can read shared context (optional)
   - No maintenance burden

3. **Proven Patterns**
   - Both guides are battle-tested
   - No need to invent new approaches
   - Follow them exactly

4. **Production Focus**
   - Not a demo or example
   - Real system for real projects
   - Quality built-in from day one

---

## 📞 Questions?

Review the three active documents in order:
1. CORRECTED-ARCHITECTURE.md (why)
2. ARCHITECTURE-REVIEW.md (validation)
3. BUILD-PLAN.md (status)

Then refer to foundation guides for implementation details.